Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dda769e21cff21a…

MALICIOUS

PDF

98.5 KB Created: 2021-08-17 13:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: d42fc56006ddc8aceb97eb3bf8b6ddaf SHA-1: 80a40cca7d5a812db6577812c3b2e464d02e9aa6 SHA-256: 3dda769e21cff21ab35d0954a423b30ea2e9339f0b9f997f2659b1e17180a00d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://aawyx.com/sites/default/imageuser/file/bisuwubuzudotalavavawo.pdf In PDF document text
    • http://kurskodkb.ru/page_edit/_samples/userfiles/files/gobodubo.pdfIn PDF document text
    • http://logistra.fr/ressource/site-image/files/xifedizuv.pdfIn PDF document text
    • http://be-now.pl/userfiles/file/bijogol.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/vewujunup.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/081ebaa8bde18103ca7b30e735bec3d0/bejejeweki.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/93524224325.pdfIn PDF document text
    • http://jp-photo.cz/soubory/files/lukuvewesitefa.pdfIn PDF document text
    • https://arerp.kr/data/file///fozijusatevefe.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608302583955e---jadavafabijirekew.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160eca4751da81---13409275943.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1609539fe7e29f---5403612343.pdfIn PDF document text
    • https://windsbs.biz/files/file/narazevopemanomixaxubuf.pdfIn PDF document text
    • https://trunglamdecor.com/uploads/userfiles/file/demolugumanodal.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/zuzokegalijuduxedutibil.pdfIn PDF document text
    • http://grandchainfamilyfoundation.org/clients/85333/File/24907376032.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/40969884854.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c2da7c573---xefubese.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/t1l9rvf85mn3e42bqqvml9khj0/tomav.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/d383ba0cab1266e422c83f2784abd12c/96456139396.pdfIn PDF document text
    • http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/87425668508.pdfIn PDF document text
    • http://deurenhanger.nl/userfiles/file/96242055095.pdfIn PDF document text
    • https://mygenius.ru/admin/ckfinder/userfiles/files/sodagujuxosapozoxefekumin.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/abijonifuzowepunataf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=barbie+a+fashion+fairytale+full+movie+in+english+part+14PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E10 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13622 16772 bytes
SHA-256: 66e26030c0889813ab1a208a99fef5e701113688ca00087ca084461023a32ece
font_02_sfnt_off00016162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16162 11408 bytes
SHA-256: 68fc455262002830713d256ed4cc2213fcad50a534c4bb8dc72cec4d10325821